https://github.com/akielaries/i2cscan
Multi-platform I2C scan utility
https://github.com/akielaries/i2cscan
c cli i2c i2c-device scanner
Last synced: about 2 months ago
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Multi-platform I2C scan utility
- Host: GitHub
- URL: https://github.com/akielaries/i2cscan
- Owner: akielaries
- Created: 2023-11-05T20:28:24.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2024-11-25T07:42:59.000Z (over 1 year ago)
- Last Synced: 2026-01-01T12:08:33.639Z (6 months ago)
- Topics: c, cli, i2c, i2c-device, scanner
- Language: C
- Homepage:
- Size: 272 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 7
-
Metadata Files:
- Readme: README.md
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README
# I2C Scan
Simple I2C utility for scanning addresses on a given bus just like i2cdetect from [i2c-tools](https://git.kernel.org/pub/scm/utils/i2c-tools/i2c-tools.git/)
but with a different approach. This utility was created from i2cdetect's inability to detect
all addresses on a given bus, in this utility we write to each address on a given bus to determine
if is alive therefore available for communication.
There is a plan to make use of this on AVR and STM32 based devices but I haven't gotten
around to it yet.
# Usage
```bash
$ i2cscan -h
Available options:
-h help
-v version
-l lists all available I2C busses (TODO)
-f fetch all busses & available addresses (TODO)
-b [BUS] specify I2C bus
-a scan all addresses
-r [FIRST-LAST] scan addresses between FIRST & LAST (int)
** For MCUs ** (TODO)
-mmcu= [MCU]
Supported MCUs :
- atmega328
- atmega2560
-dev [DEVICE]
```
* Scan I2C bus `/dev/i2c-1` for any available addresses:
```bash
$ i2cscan -b 1 -a
Scanning all addresses 0 to 127
Found device at I2C address 0x28
Found device at I2C address 0x29
Found device at I2C address 0x53
Found device at I2C address 0x68
Found device at I2C address 0x76
```
* Scan I2C bus `/dev/i2c-1` for addresses between 0x28(40) - 0x2a(42):
```bash
$ i2cscan -b 1 -r 40-42
Scanning all addresses 40 to 42
Found device at I2C address 0x28
Found device at I2C address 0x29
```
# Installation
## Linux Dependencies
* gcc
## AVR dependencies
* avr-libc
* gcc-avr
* binutils-avr
* avrdude
```
# install
$ sudo make install
# uninstall
$ sudo make uninstall
```